The hypothalamus produces thyrotropin-releasing hormone (TRH), which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH).
Water Opal is a colourless, clear opal with a play of colour. It is rare and valuable in the Realms, where it is used in scrying devices.ater Opals are valuable gems in the game which may be found. This item appears in Baldur's Gate (game) , Baldur's Gate: Enhanced Edition, Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition.
Description Edit. Water opal was a clear to translucent gemstone with small flashes of color. Opals without any color were considered plain hyalite, an inferior stone, and were nearly worthless.Water opal was rare and highly prized for use in decorating mirrors and windows and in the creation of scrying devices such as crystal balls.A typical specimen had a base value of 1,000 gp.pals without any color were considered plain hyalite, an inferior stone, and were nearly worthless. Water opal was rare and highly prized for use in decorating mirrors and windows and in the creation of scrying devices such as crystal balls. A typical specimen had a base value of 1,000 gp.